APF MP-1000
The APF Microcomputer System, also known as M-1000 or MP-1000, is a second-generation 8-bit cartridge-based console released in 1978. Developed by Ed Smith, it comes with a built-in game, Rocket Patrol.
The machine offers graphics that were advanced for its time, 256x192 pixels in 8 colors. The MP-1000 was part of the APF Imagination Machine. This consisted of two parts: the MP-1000 and a docking-bay that included a full-sized typewriter style keyboard making it possible to learn to program and create games fo the machine.
Here is a list of 13 games that came out for the MP-1000:
- MG1001 - Built in: Rocket Patrol
- MG1002 - Catena
- MG1003 - Hangman, Tic Tac Toe, Doodle
- MG1004 - Bowling, Micro
- MG1005 - Brickdown, shooting gallery
- MG1006 - Baseball
- MG1007 - Blackjack
- MG1008 - BackGammon
- MG1009 - Casino I: Roulette, Keno, Slots
- MG1010 - UFO, Sea Monster, Break it down, Rebuild, Shoot
- MG1011 - Pinball, Dungeon hunt, Blockout
- MG1012 - Boxing
- MG1013 - Space Destroyers (Space Invanders)
APF MP-1000 Imagination Machine
APF MP-100 Games
Motorola 6800 CPU
The 6800 is an 8-bit microprocessor designed by Motorola in 1974. The processor was developed as part of the M6800 Microcomputer System that was announced in the same year.
The 6800 has a 16-bit address bus that can directly access 64KB of memory and an 8-bit bi-directional databus. The CPU has a total of 72 instructions using seven different addressing modes, resulting in 197 opcodes. The original 6800 used a clock frequency of up to 1 MHz, while later versions increased this limit to 2MHz.
The 6800 was used in various computer systems and point of sale terminals. It can also be found in older arcade systems and pinball machines. It was succeeded by the MC6802 which was released in 1977. This CPU had 128 bytes of RAM on board and an internal clock oscillator. The later produced Motorola 6809 was stil backwards compatible with the 6800.
Motorola MC6847 Video Display Generator
The MC6847 is a video display generator (VDG) first introduced by Motorola and used in the following machines (this is not a full list):
- TRS-80 Color Computer
- Dragon 32/64
- Laser 200
- TRS-80 MC-10/Matra Alice
- NEC PC-6000 series
- Acorn Atom
- APF Imagination Machine
The VDG is a relatively simple display generator compared to other display chips of the time. It is capable of displaying alphanumeric text, semigraphics and raster graphics contained within a roughly square display matrix 256 pixels wide by 192 lines high.
The ROM includes a 5 x 7 pixel font, compatible with 6-bit ASCII. Effects such as inverse video or colored text (green on dark green; orange on dark orange) are possible.
The MC6847 is capable of displaying nine colors:
- black
- green
- yellow
- blue
- red
- buff (almost-but-not-quite white)
- cyan
- magenta
- and orange
The MC6847 is a Video Display Generator (VDG) first introduced by Motorola in 1978